Dynamo-electric machine



V. G. APPLE lfef my 1931.

DYNAMO ELECTRIC MACHINE Y Filed June 14 INVENTOR.

Patented Feb. 17, 1931 DYNAMO-ELECTRIC MACHINE Application filed .Tune14,

My invention relates particularly to iniproveinents in the form andarrangement of the frame of a dynamo electric machine, and an object ofmy invention is to so construct this portion of the machine that otherportions may be more readily and more securely attached thereto or moreeffecetively mounted thereon for communication therewith.

Other objects will become apparent to those skilled in the art as theinvention is described in detail and reference is made to the drawingswhereiii- Fig. 1 is a longitudinal vertical cross section thru thedynamo.

Fig. 2 is a cross section taken on line 2-2 of Fig. 1.

Similar numeralsrefer to similary parts thruout the several views.

Referring to the drawings a substantially closed frame 10 carries aseries of poles, 11,

. 11 etc., one end being closed in to form a hub 12, and the other endbeing partially closed iii to form flange 13 which supports bearing head14.

A partition l5 extends inwardly from frame 10 dividing said frame intotwo compartments 16 and 17.

Flange 125, poles 11 and partition 15 are bored to a diameter slightlylarger than the armature that is to run within said poles, said armatureto be supported at one end by a bearing within hub 12 and at the otherend by a bearing within bearing head 14.

Coils 18 wound about poles 11 have as their terminals one oi` morecontacts 19 which are securely fastened to but electrically insulatedfrom partition 15, or one or more coil ends ot one polarity may bejoined to frame 10 when it is desired to complete the circuit thru saidframe.

After the coils are in place and connected a cylindrical plug may beinserted in the frame, said plug to closely fit and extend thru flange13, poles 11 and partition 15. Fluid insulating material 20 is thenpouied or pumped into the space left by coils 1G and hardened or allowedto harden by heatl or other means, after which the plug is removed andcompartment 1G comprising the field ele- 1928. Serial No. 285,267.

ment is complete leaving contain the brush rigging.

compartment 17 to Brush holders may be mounted directly on partition 15or thegy adjustably secure may be mounted on'a ring to partition 15, or1n any other Vmanner desired, the improvement residing not so much 1nthe manner ot mounting the brush rigging aS 1n the contour of the tectsand tion serving at the same time holds the coils in place,

the partias a means of support for rigid Winding terminals without thenecessity for the flexible leads or loose wires which usually proceedfrom the ends of a field winding for other parts.

connection to A portion of frame 10 may be cut away as at 21 or in anymanner to give convenient access to the brush 22 may be supplied for theformed.

While I have herein as one embodiment of of cylindrical contour tour maybe used if .shown es and a cover opening thus and described my inventiona traine frames of other condesired, and the several portions of theframe may be integral as shown or made up of a. plural f parts joinedtogether.

ity of separate aving described my invention l aim to more clearlydefine the scope following, wherein I claim` 1. In a dynamo electrictially closed shell, field poles wardly from said shell,

thereof in the machine, a substanextending inbearings adapted' tosupport an armature within said shell, a partition wall extendinginwardly from said shell dividing the space witlii n into a fieldconipartmcntiand a biush compartment and carrying an insulated te fieldwinding about said poles to said terminal and insulating ing said fieldwinding in rminal thereon, a

and connected material bindplace and filling all voids in said fieldcompartment.

In a dynamo electric niacl tially closed shell, field poles iine, asubstanextending iiiwardly trom said shell. bearings adapted to idshell. a par- .brush rigging support an armature within sa titioii walladapted to carry a ings in place and filling all voids in said fieldcompartment.

partment and 3. In a dynamo electric machine, a substantially closedshell, field poles extending in'- 'wardly from said shell, one end ofsaid shell being substantially closed and having a hub to support abearing for one end of an armature, the other end being partially closedto permit entrance of the armature and to support a coverV containing abearing for the other end of said armature a partition wall extendinginwardly from said shell dividing the space within into a fieldcompartment and a brush compartment and carrying an insulated terminalthereon, a field Winding about said poles and connected to said terminaland insulating material binding said field winding in place and fillingall voids in said field compartment.

4,-. A method of making a part of a dynamo electric machine, whichconsists of providing a substantially closed shell having field polesextending inwardly therefrom, supports for armature bearings connectedtherewith and a partition wall extending inwardly therefrom dividing thespace within into a field coma brush compartment, boring the partition,the poles and one end of said shell, placing a field winding over saidpoles and connecting said winding to an insulated l terminal supportedon said partition, inserting a cylindrical plug into said boredportions, forcing in a fluid insulating material around the coils tohold them in place and fill all voids in the field compartment,solidisaid partition, a winding surrounding said poles and connected tosaid terminal, and a mass of insulation molded in situ into all of theremaining space in said shell from the bore of said poles outwardly andfrom said partition to said bearing cap seat to surround said windingand the joint connecting said winding to said terminal.

In testimony whereof I hereunto set my hand.

VINCENT G. APPLE.

fying the insulating material and removing said plug.

5. In a dynamo electricmachine,an inseparable field structurecomprising, a substantially closed shell, field poles extending inwardlyfrom said shell, a seat for a bearing in one end of said shell, a seatfor a bearing cap in the other end of said shell, a partitionintermediate said ends extending inwardly from said shell, a mass ofmolded insulation filling the space within the shell from the bore ofthe poles outwardly and between said partition and said bearing capseat, and coils surrounding said poles and imbedded in said moldedinsulation mass.

6. In a dynamo electric machine, a unitary field structure comprising, asubstantially closed shell, field poles extending inwardly from saidshell, a seat for an armature shaft bearing in one end of said shell, aseat for an armature shaft bearing cap at the other end of said shell, apartition intermediate said ends extending inwardly from said shell, ametal terminal extending through the wall of

